A switch cabinet drawer side lock hand-pull push mechanism

Abstract

The present invention discloses a switch cabinet drawer side lock hand-pull propulsion mechanism, which is used for the drawer to enter and exit the switch cabinet, wherein the switch cabinet includes a bottom support plate, and the drawer is arranged on the bottom support plate; and further includes a locking assembly, wherein the locking assembly includes an unlocking piece, a locking rod, and a positioning plate arranged on the drawer. The present invention adopts a locking assembly separately arranged on the drawer and the bottom support plate, and sets a plurality of locking points. The drawer position can be accurately locked during the push-in and pull-out action of the drawer, and the locking assembly is independent of the connection structure between the drawer and the switch cabinet, and is not affected by the large deadweight of the drawer, effectively ensuring the service life and the accurate locking position. In combination with the micro switch and the telescopic position display assembly that are precisely set, the position status of the drawer can be accurately marked when any point is locked, so that the user can clearly obtain the current position information, and the user experience is friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of low-voltage switch cabinets and relates to a hand-pull propulsion mechanism for a side lock of a switch cabinet drawer. Background Art

[0002] In low-voltage switchgear, the drawers inside the switch cabinet are loaded with a large number of high-current components to form an integrated multifunctional working unit, which is an important component of the switch cabinet.

[0003] During operation of existing switch cabinets, the drawers have multiple working positions inside the switch cabinet to accommodate different testing tasks. Since high-current equipment requires high connection precision, users are required to have a very high grasp of the drawer position when pushing and pulling the drawer out of the switch cabinet. However, due to the large number of components, the weight of the drawer is generally around tens of kilograms. The user's control of the drawer will be affected by various factors, such as the impact of its own weight on the connection locking structure, the inertia caused by excessive weight, etc., and ordinary connection locking structures are difficult to bear heavy loads. In long-term use, deformation, tooth jumping, thread disengagement and damage are prone to occur. As a result, the user cannot accurately control the position of the drawer and cannot obtain accurate position information during operation. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a switch cabinet drawer side lock manual push mechanism.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A switch cabinet drawer side lock hand-pull propulsion mechanism, used for the drawer to move in and out of the switch cabinet, the switch cabinet includes a bottom support plate, the drawer is arranged on the bottom support plate; also includes a locking assembly, the locking assembly includes an unlocking piece arranged on the drawer, a lock rod and a positioning plate arranged on the bottom support plate, the positioning plate is provided with a plurality of grooves for accommodating the lock rod, the unlocking piece is connected to the lock rod, and the movement of the unlocking piece drives the lock rod to enter / disengage the groove; the drawer is provided with a telescopic position display assembly and a plurality of micro switches, the telescopic position display assembly and the micro switches are electrically connected, and the plurality of micro switches are arranged in sequence along the movement direction of the drawer, a sliding bracket for triggering the micro switches is provided on the drawer for sliding cooperation, and an elastic member for resetting the sliding bracket is also provided, the two ends of the elastic member are respectively connected to the sliding bracket and the drawer, a self-locking switch is provided at the front end of the drawer, the action end of the self-locking switch is connected to the unlocking piece, and the bottom support plate is provided with a boss for abutting against the sliding bracket in the movement direction of the drawer.

[0007] Furthermore, the drawer is provided with a mechanism bottom plate, and a strip groove is opened on the mechanism bottom plate along the movement direction of the drawer. A limiting column is fixedly connected to the sliding bracket, one end of the limiting column is connected to the elastic member, and the other end extends toward the bottom support plate for abutting against the boss.

[0008] Furthermore, the elastic member is a tension spring or a top spring.

[0009] Furthermore, an indicator bar is telescopically provided in the telescopic position display component, a plurality of marks are provided on the indicator bar, and a display square groove for displaying the marks is provided on the telescopic position display component.

[0010] Furthermore, an unlocking fixed bracket is provided on the drawer, the unlocking piece is passed through the unlocking fixed bracket, a sliding groove for the locking rod to pass through is provided on the unlocking piece, and limiting grooves are provided on the unlocking fixed bracket and the bottom of the drawer, and the two ends of the locking rod are respectively passed through the limiting grooves, and the sliding groove and the limiting groove form a set angle.

[0011] Furthermore, it also includes a first spring, the two ends of which are respectively connected to the unlocking piece and the unlocking fixed bracket, the action of the unlocking piece includes an unlocking position and a locking position, and the first spring provides an elastic force for the unlocking piece to tend to the locking position.

[0012] Furthermore, it also includes a square rod bracket, on which a square rod interlocking lock plate is movably provided, and the square rod bracket is connected to a square rod interlocking piece via a rotating shaft, and an arc groove is provided on the square rod interlocking piece, and one end of the square rod interlocking lock plate is provided with a sliding shaft for passing through the arc groove, and the rotation of the square rod interlocking piece drives the lifting and lowering of the square rod interlocking lock plate, and the front end of the bottom support plate is provided with a flange for abutting against the lower end of the square rod interlocking lock plate.

[0013] In summary, the present invention is beneficial in that:

[0014] The present invention adopts a locking assembly that is separately arranged on the drawer and the bottom support plate, and sets multiple locking points. The drawer position can be accurately locked during the push-in and pull-out actions of the drawer. The locking assembly is independent of the connection structure between the drawer and the switch cabinet, and is not affected by the large deadweight of the drawer, effectively ensuring the service life and ensuring the accurate locking position. In conjunction with the precisely corresponding micro switches and telescopic position display components, the position status can be accurately identified when any point of the drawer is locked, so that the user can clearly obtain the current position information, and the user experience is friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the drawer and the bottom support plate of the present invention.

[0016] Figure 2 It is a structural diagram of the side lock hand-pull propulsion mechanism.

[0017] Figure 3 Schematic diagram of the structure of the unlocking piece.

[0018] Figure 4 for Figure 2 Schematic diagram of the structure from the bottom perspective.

[0019] Figure 5 It is a structural diagram of the sliding bracket part.

[0020] Figure 6 This is a structural diagram of the square rod bracket part.

[0021] Figure 7 for Figure 2 Schematic diagram of the structure when the middle elastic member is a top spring.

[0022] Markings in the figure: 1. Drawer; 2. Bottom support plate; 21. Positioning plate; 211. Groove; 22. Boss; 31. Mechanism bottom plate; 32. Unlocking fixed bracket; 321. Unlocking piece; 322. Slide; 323. Lock rod; 324. Spring; 325. Unlocking slide; 33. Sliding bracket; 331. Limiting column; 332. Tension spring; 333. Strip groove; 334. Top spring; 34. Square rod interlocking lock plate; 341. Square rod bracket; 342. Square rod interlocking piece; 343. Arc groove; 35. Telescopic position display component; 351. Display square groove; 352. Indicator bar. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0024] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be arbitrarily changed, and the component layout may also be more complex.

[0025] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the perpendicular relationship may actually be an approximately perpendicular relationship.

[0027] A switch cabinet drawer side lock hand-pull push mechanism, set in the switch cabinet drawer 1, refer to Figure 1 The drawer 1 is arranged in the drawer slot on the switch cabinet. A bottom support plate 2 and a slide rail are provided at the bottom of the drawer slot. The drawer 1 can be translated along the slide rail on the bottom support plate 2 to realize rocking in and out of the drawer slot. The drawer 1 has three specific position states relative to the drawer slot during the rocking in and out process, including a connection position, a test position and an isolation position, and the positional relationship of the connection position, the test position and the isolation position is arranged in sequence from the inside of the drawer slot to the outside.

[0028] The side lock hand-pull propulsion mechanism is used to execute the precise positioning of the drawer 1 between the above three position states. The side lock hand-pull propulsion mechanism includes a mechanism base plate 31 arranged at the bottom of the drawer 1, and a locking component and a hand-pull propulsion display component arranged on the mechanism base plate 31.

[0029] Reference Figure 2 and Figure 3 When the keeper 32 is in the unlocking state, the keeper 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock 321 is in the unlocking state, and the lock

[0030] When the locking cam 323 is in the unlocking state, the locking cam 323 is in the unlocking state, and the locking cam 323 is in the unlocking state. The positioning groove is set, and the locking rod 323 can move relative to the first limiting groove and the second limiting groove. The setting direction of the slide groove 322 is at a set angle to the setting direction of the first limiting groove or the second limiting groove. Then, when the unlocking piece 321 is translated along the first straight line direction, the force exerted by the inner wall of the slide groove 322 on the locking rod 323 can drive the locking rod 323 to translate along the setting direction of the first limiting groove or the second limiting groove. In this embodiment, in the unlocked position and the locked position, the locking rod 323 is respectively located at both ends of the setting direction of the first limiting groove (or the second limiting groove).

[0031] Reference Figure 2 、 Figure 4 When the drawer 1 is unlocked, the lock rod 323 is locked and the drawer 1 is unlocked, and the lock rod 323 is locked in the unlocked state.

[0032] Furthermore, an unlocking slide 325 is provided on the unlocking piece 321, and a micro switch is provided on one side of the unlocking fixed bracket 32. When the unlocking piece 321 drives the unlocking slide 325 to move, the unlocking slide 325 can trigger the micro switch. An indicator light electrically connected to the micro switch can be provided on the drawer 1 to indicate that it is currently in the unlocked position or the locked position.

[0033] Furthermore, a self-locking switch is provided at the front end of the drawer 1, and the inner side of the self-locking switch abuts against the front end of the unlocking piece 321. When the self-locking switch is pressed, the self-locking switch pushes the unlocking piece 321 inward into the unlocking position and abuts the unlocking piece 321 to prevent the unlocking piece 321 from returning to the locked position. At this time, when the above-mentioned unlocking piece 321 is locked, the drawer 1 can be pushed in and pulled out arbitrarily within the range of the isolation position, test position, and connection position.

[0034] When the drawer 1 is pushed and pulled out within the range of the isolation position, the test position, and the connection position, the self-locking switch is pressed again to release the unlocking piece 321, eliminating the reset lock on the unlocking piece 321. When the drawer 1 moves to any one of the isolation position, the test position, and the connection position, the corresponding groove 211 on the positioning plate 21 creates a gap in the moving stroke of the locking rod 323, so that the unlocking piece 321 can be pushed by the spring 324 to reset to the locked position, and the locking rod 323 can enter the groove 211, locking the drawer 1 and the drawer slot, thereby realizing the precise positioning of the drawer 1 to any required position among the isolation position, the test position, and the connection position.

[0035] When the drawer 1 moves outward in the isolation position, in order to avoid the safety risk caused by the drawer 1 being accidentally over-pulled out, a square rod bracket 341 and a square rod interlocking lock plate 34 are also provided. Figure 6 The square rod interlocking lock plate 34 is set on the square rod bracket 341 and is set downward through the mechanism bottom plate 31. The square rod interlocking lock plate 34 can move up and down vertically so that its lower end can contact the bottom support plate 2 downward. The front end of the bottom support plate 2 is provided with a raised portion such as a flange or a step. When the square rod interlocking lock plate 34 is in the downward position, the drawer 1 will be pulled out of the process of the square rod interlocking lock plate 34 being pressed forward against the flange or step, so that the drawer 1 cannot be pulled out further, ensuring safety.

[0036] The square rod bracket 341 is provided with a square rod locking piece 342, and the square rod locking piece 342 is connected to the square rod bracket 341 through a rotating shaft, so that the square rod locking piece 342 can rotate relative to the square rod bracket 341 along the rotating shaft as the rotation center. The square rod locking piece 342 is provided with an arc groove 343, and the center of the arc groove 343 is offset by a set distance relative to the center of the rotating shaft. The square rod locking plate 34 is provided with a sliding shaft, which is passed through the arc groove 343. Then, under the rotation action of the square rod locking piece 342, the relative cooperation relationship between the arc groove 343 and the sliding shaft can drive the lifting action of the square rod locking plate 34. By fixing the rotation angle of the square rod locking piece 342, the height position of the square rod locking plate 34 can be set.

[0037] In order to enable the user to more clearly know the current position of drawer 1, refer to Figure 1 、 Figure 2 and Figure 5 The hand-pushing display assembly includes a sliding bracket 33, a limiting column 331, an elastic member, and a telescopic position display assembly 35. The sliding bracket 33 is arranged on the mechanism bottom plate 31 and can move relative to the mechanism bottom plate 31 along the movement direction of the drawer 1. The limiting column 331 is fixedly connected to the sliding bracket 33. A strip groove 333 is opened on the mechanism bottom plate 31 along the movement direction of the drawer 1. The bottom end of the limiting column 331 passes downward through the strip groove 333 to the bottom of the mechanism bottom plate 31. A corresponding boss 22 is provided on the bottom support plate 2. The boss 22 is located directly below the strip groove 333. The two ends of the elastic member are respectively fixed to the limiting column 331 and the mechanism bottom plate 31.

[0038] Among them, the elastic member includes but is not limited to the tension spring 332 or the top spring 334, and the tension spring 332 or the top spring 334 is set corresponding to the movement direction of the limit column 331 to provide a reset function for the sliding bracket 33. Figure 2 and Figure 7 .

[0039] When the drawer 1 is pushed into the drawer slot, the mechanism bottom plate 31 drives the sliding bracket 33 to move until the limit post 331 is against the boss 22, and the boss 22 limits the further movement of the limit post 331 and the sliding bracket 33. Therefore, when the mechanism bottom plate 31 moves further, the sliding bracket 33 and the mechanism bottom plate 31 form a relative movement and stretch the tension spring 332 or compress the top spring 334; conversely, when the drawer 1 is pulled out, the rebound effect of the tension spring 332 or the top spring 334 pulls or pushes the sliding bracket 33 to move and reset relative to the mechanism bottom plate 31, and under further pulling out, the limit post 331 is disengaged from the boss 22.

[0040] The telescopic position display component 35 is arranged at the front end of the mechanism base plate 31. An indicator bar 352 is inserted into the telescopic position display component 35. The indicator bar 352 can be extended and retracted relative to the telescopic position display component 35 along the length direction. Three marks representing the isolation position, the test position, and the connection position are arranged in sequence on the indicator bar 352 along the length direction. A display square slot 351 is provided on the telescopic position display component 35. During the relative extension and retraction of the indicator bar 352, the three marks can all move to a position facing the display square slot 351. Three micro switches are arranged in sequence on the mechanism base plate 31. The three micro switches are all electrically connected to the telescopic position display component 35. When the drawer 1 moves to the isolation position, the test position, and the connection position respectively, the relative movement of the sliding bracket 33 will trigger the three micro switches respectively, thereby triggering the telescopic position display component 35 to drive the indicator bar 352 to perform corresponding extension and retraction actions, so as to display the corresponding marks in the display square slot 351 for the user to view.

[0041] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

Claims

1. A switch cabinet drawer side lock manual push mechanism, used for the drawer (1) to enter and exit the switch cabinet, characterized in that: The switch cabinet includes a bottom support plate (2), and the drawer (1) is arranged on the bottom support plate (2); it also includes a locking assembly, the locking assembly includes an unlocking piece (321) and a locking rod (323) arranged on the drawer (1), and a positioning plate (21) arranged on the bottom support plate (2), the positioning plate (21) is provided with a plurality of grooves (211) for accommodating the locking rod (323), the unlocking piece (321) is connected to the locking rod (323), and the movement of the unlocking piece (321) drives the locking rod (323) to enter / escape from the groove (211); a telescopic position display assembly (35) and a plurality of micro switches are provided on the drawer (1), the telescopic position display assembly (35) and the micro switches are electrically connected, and the plurality of micro switches are arranged in sequence along the movement direction of the drawer (1), and a sliding-matching connection is provided on the drawer (1) for triggering the micro switches. The sliding bracket (33) is further provided with an elastic member for resetting the sliding bracket (33), the two ends of the elastic member are respectively connected to the sliding bracket (33) and the drawer (1), the front end of the drawer (1) is provided with a self-locking switch, the action end of the self-locking switch is connected to the unlocking piece (321), and the bottom support plate (2) is provided with a boss (22) for abutting against the sliding bracket (33) in the action direction of the drawer (1); the drawer (1) is provided with an unlocking fixed bracket (32), the unlocking piece (321) is passed through the unlocking fixed bracket (32), and the unlocking piece (321) is provided with a sliding groove (322) for the locking rod (323) to pass through. The unlocking fixed bracket (32) and the bottom of the drawer (1) are both provided with a limiting groove, the two ends of the locking rod (323) are respectively passed through the limiting groove, and the sliding groove (322) forms a set angle with the limiting groove.

2. A switch cabinet drawer side lock manual push mechanism according to claim 1, characterized in that: The drawer (1) is provided with a mechanism bottom plate (31), and a strip groove (333) is provided on the mechanism bottom plate (31) along the movement direction of the drawer (1). A limiting column (331) is fixedly connected to the sliding bracket (33), and one end of the limiting column (331) is connected to the elastic member, and the other end extends toward the bottom support plate (2) to abut against the boss (22).

3. A switch cabinet drawer side lock manual push mechanism according to claim 2, characterized in that: The elastic member is a tension spring (332) or a top spring (334).

4. A switch cabinet drawer side lock manual push mechanism according to claim 1, characterized in that: An indicator bar (352) is telescopically provided in the telescopic position display component (35), a plurality of marks are provided on the indicator bar (352), and a display square groove (351) for displaying the marks is provided on the telescopic position display component (35).

5. The switch cabinet drawer side lock manual push mechanism according to claim 1, characterized in that: It also includes a first spring (324), the two ends of which are respectively connected to the unlocking piece (321) and the unlocking fixing bracket (32), the action of the unlocking piece (321) includes an unlocking position and a locking position, and the first spring (324) provides an elastic force for the unlocking piece (321) to move toward the locking position.

6. A switch cabinet drawer side lock manual push mechanism according to claim 1, characterized in that: The invention also includes a square rod bracket (341), a square rod interlocking lock plate (34) movably penetrated on the square rod bracket (341), a square rod interlocking piece (342) is connected to the square rod bracket (341) via a rotating shaft, an arc groove (343) is provided on the square rod interlocking lock plate (34), one end of the square rod interlocking lock plate (34) is provided with a sliding shaft for penetrating into the arc groove (343), the rotation of the square rod interlocking piece (342) drives the lifting of the square rod interlocking lock plate (34), and the front end of the bottom support plate (2) is provided with a flange for abutting against the lower end of the square rod interlocking lock plate (34).

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